// check if version is initial version
if (version.basedOnSet().isEmpty()) {
return;
}
// remove all predecessor versions recursively
for (Number160 basedOnKey : version.basedOnSet()) {
deletePredecessors(new Number640(key.locationAndDomainAndContentKey(), basedOnKey), sortedMap);
}
}
public NavigableMap<Number640, Data> get() {